Physics
Scientific paper
Nov 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jap....46.4730i&link_type=abstract
Journal of Applied Physics, Volume 46, Issue 11, pp. 4730-4739 (1975).
Physics
1
Plasma Heating By Particle Beams
Scientific paper
Effective collision frequency enhanced by an ion sound wave parametrically excited in Tonks-Dattner (T-D) resonance is evaluated from the Q value and the damping rate of a surface wave propagating along the axial direction as a test wave, which are observed in a mercury vapor discharge. The ion sound wave is produced by a three-wave process of the parametric excitation where the incident electromagnetic wave decays into two electrostatic waves, an ion sound wave, and a T-D resonance. The effective collision frequencies thus obtained as a function of the absorbed pumping power are nearly in agreement with those based on the perturbed orbit theory proposed by Weinstock et al. The ion density fluctuation level estimated from Dawson's formula is found to be lower than that obtained in other turbulent experiments.
Ikezawa Shunjiro
Okuda Takayoshi
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